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Code Activity
19629 commits 24 branches 48 tags 158 MiB
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75 commits

Author SHA1 Message Date
Lev Nachmanson
a1673f2bdd fallback to Gomory cuts and gcd conflicts if dio fails 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-04-21 17:10:32 -07:00
Lev Nachmanson
17af18fe31 make gcd call in dio optional 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-04-18 18:24:50 -07:00
Lev Nachmanson
87e2ce8948 Update lp_settings.h - m_dio_calls_period = 4 2025-04-18 18:24:50 -07:00
Lev Nachmanson
8db9f52386 add parameter m_dio_calls_period 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-04-18 18:24:50 -07:00
Lev Nachmanson
972f80188a throttle dio for big numbers 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-04-18 18:24:50 -07:00
Nikolaj Bjorner
8035edbe65 remove lp_assert 2025-04-14 11:10:26 -07:00
Lev Nachmanson
dee3cf8de4 remove an unused field 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-03-24 07:44:13 -10:00
Nikolaj Bjorner
29c5c20267 use more descriptive functions than casting comparisons 2025-03-24 07:44:13 -10:00
Lev Nachmanson
6f7b749ff9 improved dio handler 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-03-24 07:44:13 -10:00
Lev Nachmanson
a7310462df throttle down cuts from proofs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-23 19:38:35 -08:00
Nikolaj Bjorner
1a3d1ad69d add base line bounds tightening utility 2025-02-21 12:46:51 -08:00
Lev Nachmanson
bd3d288a08 tighten only core constrants 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-20 08:40:16 -08:00
Lev Nachmanson
e920291393 fixing the default parameters of dio and rename m_gomory_cuts to m_cuts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
134bed826a throttle the branching in dio 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
7e02dfe484 add stats on m_dio_branching_conflicts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
a19e10912f make dio less aggressive, allow other cuts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
174185582a collect the explanation correctly 2025-02-11 12:23:00 -10:00
Lev Nachmanson
e4f3b5753f solving regressions/smt2/b1.smt2 2025-02-11 12:23:00 -10:00
Lev Nachmanson
71c433908c work on incremental version 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
392c24a145 throttle dioph equalities 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
9e8b17b5f8 do not use conflicts with fresh vars to create branches 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
ea50208ad6 prepare using fresh vars in cuts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
2ebb957cc8 enable cuts from proofs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
a1a01b9da6 move some functionality from int_solver to int_solver::imp 2025-02-11 12:23:00 -10:00
Lev Nachmanson
3d6cc64e2e prepare for calling diophantine equations 2025-02-11 12:23:00 -10:00
Lev Nachmanson
097a25ebfe add parameter to control calling diophantine equations 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Nikolaj Bjorner
648cf9602e fix uninitialized variable warnings 2025-01-14 13:54:05 -08:00
David Seifert
2ce89e5f49
Gcc 15 two phase (#7313) 
* Fix `-Wclass-memaccess`

* Fix for GCC 15 two-phase lookup

* GCC 15 is more aggressive about checking dependent names:
  https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=r15-2117-g313afcfdabeab3

Bug: https://bugs.gentoo.org/936634
 2024-07-29 11:07:10 -07:00
Nikolaj Bjorner
8fe357f1f2
Nlsat simplify (#7227) 
* dev branch for simplification

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* bug fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* bugfixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix factorization

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* separate out simplification functionality

* reorder initialization

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* reorder initialization

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Update README.md

* initial warppers for seq-map/seq-fold

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* expose fold as well

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add C++ bindings for sequence operations

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add abs function to API

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add parameter validation to ternary and 4-ary functions for API #7219

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add pre-processing and reorder

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add pre-processing and reorder

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

---------

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-05-14 22:19:33 -07:00
Nikolaj Bjorner
bdb9106f99
Api (#7097) 
* rename ul_pair to column

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* t

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* simple test passed

* remove an assert

* relax an assertion

* remove an obsolete function

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* access a term by the term column

* remove the column index from colunm.h

* remove an unused method

* remove debug code

* fix the build of lp_tst

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

---------

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
Co-authored-by: Lev Nachmanson <levnach@hotmail.com>
 2024-01-24 16:05:18 -08:00
Lev Nachmanson
2934618c50 remove simplify_inequality from gomory.cpp 2024-01-04 11:40:57 -10:00
Lev Nachmanson
53c95e3627 cleanup 2023-12-28 06:00:57 -10:00
Lev Nachmanson
0728b81e9e add parameter lp_settings.m_gomory_simplify 2023-12-28 06:00:57 -10:00
Nikolaj Bjorner
77dab53e9e track number of Gomory cuts 2023-11-07 19:57:49 +01:00
Lev Nachmanson
ca6cb0af95 add changes in lp with validate_bound and maximize_term 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-11-02 09:59:03 -07:00
Nikolaj Bjorner
4a870966ad add code to enable unit propagation of bounds 
set UNIT_PROPAGATE_BOUNDS 1 to use the unit propagation version. It applies unit propagation eagerly (does not depend on checking LIA consistency before final check) and avoid creating new literals in most cases
 2023-10-09 16:04:39 +09:00
Lev Nachmanson
610313946d split free vars in nla 2023-08-18 12:36:14 -07:00
Lev Nachmanson
e091a2e775 remove the line with clang-format off 2023-07-10 12:05:59 -07:00
Lev Nachmanson
5ed2a82893
set clang format off for lp files (#6795) 
* adding // clang-format off

* set clang-format off at the beginning of  lp files

* set clang-format off

* remove dead code
 2023-07-03 17:35:16 -07:00
Lev Nachmanson
32ec02778e
use heap to track infeasible columns. (#6771) 
* use heap to track infeasible columns

* fix the formatting

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

---------

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-06-19 13:50:14 -07:00
Nikolaj Bjorner
ef943347ee ensure assume-eqs is invoked after check-lia statically 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-04-26 11:16:15 -07:00
Nikolaj Bjorner
a2bac119d3 differentiate fixed from offset-eq in statistics 2023-04-18 08:40:51 -07:00
Lev Nachmanson
3efe91c3e3 more dead code 2023-03-08 10:27:05 -08:00
Lev Nachmanson
c8c0a00190 remove more dead code 2023-03-08 10:27:05 -08:00
Lev Nachmanson
f351eb3ab2 remove many methods dealing with double 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson
9ec82632a3 rp precise 2023-03-08 10:27:05 -08:00
Lev Nachmanson
73224adc48 cleanup 2023-03-08 10:27:05 -08:00
Lev Nachmanson
377ceba6d5 rm lu 2023-03-08 10:27:05 -08:00
Lev Nachmanson
25f103db1a rm_lp 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson
527f0d1242 rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00